Maria de Villota, a test driver for the Marussia F1 team, was rushed to hospital with life-threatening injuries after her car collided with a lorry at Duxford Airfield this morning.
A woman has sustained life threatening injuries and following treatment at the scene by paramedics, she has been taken to Addenbrookes Hospital for further care.
The accident is said to have happened at low speed after Villota pulled off the track following a lap during which she reached speeds of about 200mph.
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A number of teenagers, aged 13 to 15, from Portsmouth, have been treated in hospital, after taking tablets believed to be diazepam.
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Thursday night's weather for the east of the region